PMID- 27194244 OWN - NLM STAT- MEDLINE DCOM- 20171201 LR - 20181202 IS - 1465-993X (Electronic) IS - 1465-9921 (Print) IS - 1465-9921 (Linking) VI - 17 IP - 1 DP - 2016 May 18 TI - Toxic and adjuvant effects of silica nanoparticles on ovalbumin-induced allergic airway inflammation in mice. PG - 60 LID - 10.1186/s12931-016-0376-x [doi] LID - 60 AB - BACKGROUND: Silica nanoparticles (SNPs) can easily enter in respiratory system via inhalation because of their low molecular weight and ease of dispersion. Toxicity and adverse effects of SNPs vary according to the physical characteristics of the particle. METHODS: To evaluate the toxic and adjuvant effects of 3 types of SNPs in the airway system, six-week-old female BALB/c mice were intranasally administered 3 types of SNPs (spherical [S-SNP], mesoporous [M-SNP], and polyethylene glycol-conjugated [P-SNP]) alone or SNPs/ovalbumin (OVA), three times weekly for 2 weeks. Airway hyper-responsiveness (AHR), bronchoalveolar lavage fluid (BALF), cytokine levels, and histology of the lungs were analyzed. RESULTS: The S-SNPs/OVA group and M-SNPs/OVA group showed significant AHR, compared to the control group. Among all SNP-treated groups, the group administered SNPs/OVA showed greater inflammatory cell infiltration in BALF, extensive pathological changes, and higher cytokine levels (IL-5, IL-13, IL-1beta, and IFN-gamma) than those administered SNPs alone or saline/OVA. CONCLUSION: Exposure to SNPs alone and SNPs/OVA induced toxicity in the respiratory system. SNPs alone showed significant toxic effects on the airway system. Meanwhile, SNPs/OVA exerted adjuvant effects to OVA of inducing allergic airway inflammation. In particular, M-SNPs showed the most severe airway inflammation in both direct toxicity and adjuvant effect assays. P-SNPs induced less inflammation than the other types of SNPs in both models. FAU - Han, Heejae AU - Han H AD - Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea. FAU - Park, Yoon Hee AU - Park YH AD - Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea. FAU - Park, Hye Jung AU - Park HJ AD - Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea. AD - Department of Internal Medicine, Division of Allergy and Immunology, Yonsei University College of Medicine, Seoul, Republic of Korea. FAU - Lee, Kangtaek AU - Lee K AD - Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea. FAU - Um, Kiju AU - Um K AD - Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea. FAU - Park, Jung-Won AU - Park JW AD - Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea. AD - Department of Internal Medicine, Division of Allergy and Immunology, Yonsei University College of Medicine, Seoul, Republic of Korea. FAU - Lee, Jae-Hyun AU - Lee JH AD - Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea. jhleemd@yuhs.ac. AD - Department of Internal Medicine, Division of Allergy and Immunology, Yonsei University College of Medicine, Seoul, Republic of Korea. jhleemd@yuhs.ac. AD - Department of Internal Medicine, Division of Allergy and Immunology, Institute of Allergy, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, 120-752, Seoul, Republic of Korea. jhleemd@yuhs.ac. LA - eng PT - Journal Article DEP - 20160518 PL - England TA - Respir Res JT - Respiratory research JID - 101090633 RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 7631-86-9 (Silicon Dioxide) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - Bronchial Hyperreactivity/chemically induced/physiopathology MH - Bronchoalveolar Lavage Fluid/chemistry MH - Bronchoconstriction/drug effects MH - Cytokines/metabolism MH - Disease Models, Animal MH - Female MH - Inflammation Mediators/metabolism MH - Inhalation Exposure MH - Lung/*drug effects/immunology/metabolism/physiopathology MH - Mice, Inbred BALB C MH - Nanoparticles/chemistry/*toxicity MH - *Ovalbumin MH - Pneumonia/*chemically induced/immunology/metabolism/physiopathology MH - Polyethylene Glycols/toxicity MH - Porosity MH - Silicon Dioxide/chemistry/*toxicity PMC - PMC4870782 OTO - NOTNLM OT - Adjuvant effect OT - Airway Inflammation OT - Nanoparticle OT - PEGylation OT - Silica OT - Toxicity EDAT- 2016/05/20 06:00 MHDA- 2017/12/02 06:00 PMCR- 2016/05/18 CRDT- 2016/05/20 06:00 PHST- 2015/10/08 00:00 [received] PHST- 2016/05/06 00:00 [accepted] PHST- 2016/05/20 06:00 [entrez] PHST- 2016/05/20 06:00 [pubmed] PHST- 2017/12/02 06:00 [medline] PHST- 2016/05/18 00:00 [pmc-release] AID - 10.1186/s12931-016-0376-x [pii] AID - 376 [pii] AID - 10.1186/s12931-016-0376-x [doi] PST - epublish SO - Respir Res. 2016 May 18;17(1):60. doi: 10.1186/s12931-016-0376-x.